Hi, Is there any equivalent in Druid to the "_Show Processlist_" in MySQL? A command that can show to me the queries that are actually running on the cluster, which user execute them and for how long are they running? (And if it is possible to kill some problematic query)

This has been asked many times, for at least "long running queries" ... unfortunately to my knowledge nothing currently exists. I don't know how feasible it would be to implement, but you might consider logging a Feature request on the GitHub issues list.

Thanks John! That was my feeling checking the documentation, I was aware of the prometheus metrics for the number of queries on fly and also the Request Logging feature, but those are not enough for the kind of troubleshooting I want to do. I'll open a request to Druid.